CVE-2025-38262— tty: serial: uartlite: register uart driver in init
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I. Basic Information for CVE-2025-38262
Vulnerability Information
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Vulnerability Title
tty: serial: uartlite: register uart driver in init
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tty: serial: uartlite: register uart driver in init When two instances of uart devices are probing, a concurrency race can occur. If one thread calls uart_register_driver function, which first allocates and assigns memory to 'uart_state' member of uart_driver structure, the other instance can bypass uart driver registration and call ulite_assign. This calls uart_add_one_port, which expects the uart driver to be fully initialized. This leads to a kernel panic due to a null pointer dereference: [ 8.143581] BUG: kernel NULL pointer dereference, address: 00000000000002b8 [ 8.156982] #PF: supervisor write access in kernel mode [ 8.156984] #PF: error_code(0x0002) - not-present page [ 8.156986] PGD 0 P4D 0 ... [ 8.180668] RIP: 0010:mutex_lock+0x19/0x30 [ 8.188624] Call Trace: [ 8.188629] ? __die_body.cold+0x1a/0x1f [ 8.195260] ? page_fault_oops+0x15c/0x290 [ 8.209183] ? __irq_resolve_mapping+0x47/0x80 [ 8.209187] ? exc_page_fault+0x64/0x140 [ 8.209190] ? asm_exc_page_fault+0x22/0x30 [ 8.209196] ? mutex_lock+0x19/0x30 [ 8.223116] uart_add_one_port+0x60/0x440 [ 8.223122] ? proc_tty_register_driver+0x43/0x50 [ 8.223126] ? tty_register_driver+0x1ca/0x1e0 [ 8.246250] ulite_probe+0x357/0x4b0 [uartlite] To prevent it, move uart driver registration in to init function. This will ensure that uart_driver is always registered when probe function is called.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于uartlite驱动注册竞争条件，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-38262
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Same Patch Batch · Linux · 2025-07-09 · 26 CVEs total
| CVE-2025-38252 | cxl/ras: Fix CPER handler device confusion | |
| CVE-2025-38264 | nvme-tcp: sanitize request list handling | |
| CVE-2025-38263 | bcache: fix NULL pointer in cache_set_flush() | |
| CVE-2025-38261 | riscv: save the SR_SUM status over switches | |
| CVE-2025-38260 | btrfs: handle csum tree error with rescue=ibadroots correctly | |
| CVE-2025-38259 | ASoC: codecs: wcd9335: Fix missing free of regulator supplies | |
| CVE-2025-38258 | mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write | |
| CVE-2025-38257 | s390/pkey: Prevent overflow in size calculation for memdup_user() | |
| CVE-2025-38256 | io_uring/rsrc: fix folio unpinning | |
| CVE-2025-38255 | lib/group_cpus: fix NULL pointer dereference from group_cpus_evenly() | |
| CVE-2025-38254 | drm/amd/display: Add sanity checks for drm_edid_raw() | |
| CVE-2025-38253 | HID: wacom: fix crash in wacom_aes_battery_handler() | |
| CVE-2025-38251 | atm: clip: prevent NULL deref in clip_push() | |
| CVE-2025-38238 | scsi: fnic: Fix crash in fnic_wq_cmpl_handler when FDMI times out | |
| CVE-2025-38249 | ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3() | |
| CVE-2025-38250 | Bluetooth: hci_core: Fix use-after-free in vhci_flush() | |
| CVE-2025-38247 | userns and mnt_idmap leak in open_tree_attr(2) | |
| CVE-2025-38248 | bridge: mcast: Fix use-after-free during router port configuration | |
| CVE-2025-38246 | bnxt: properly flush XDP redirect lists | |
| CVE-2025-38244 | smb: client: fix potential deadlock when reconnecting channels |
Showing top 20 of 26 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
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unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2025-38262
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